"If your gun needs a new finish try something else besides this product. I followed instructions very carefully, spent hours on metal preparation and practiced my airbrush technique just like the instructions tell you. The end result was a disaster. The enclosed airbrush is very poor, gives very uneven coats and the air hose continuously comes lose during application. It will not give a fine, even coat. In fact the Perma Fin is very runny, (no I did not put it on to heavy) had bumps in the coat and simply looks terrible. I repeatedly tried to get it to apply thin, even coats with absolutely no success."